• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta Agriculturae Scandinavica. Section B, Soil and Plant Science >Cover crop stubble and straw management in seed production of timothy (Phleum pratense L.), meadow fescue (Festuca pratensis Huds.), and red clover (Trifolium pratense L.)
【24h】

Cover crop stubble and straw management in seed production of timothy (Phleum pratense L.), meadow fescue (Festuca pratensis Huds.), and red clover (Trifolium pratense L.)

机译：在提摩太（Phleum pratense L.），草甸羊茅（Festuca pratensis Huds。）和红三叶草（Trifolium pratense L.）的种子生产中覆盖作物茬和秸秆管理。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The market for cereal straw has diminished in many seed-production areas due to less livestock. Seed growers, therefore, want to chop and return the straw. The objective was to investigate the effect of cover crop stubble height and straw management on vegetative growth in autumn and the following year's seed yield of timothy, meadow fescue, and red clover. The plan included two stubble heights (5-10 cm and 20-30 cm) combined with four different straw and stubble managements, (A) straw removal, (B) straw chopping at combining, (C) flail-chopping with tractor after combining, and (D) straw chopping in two operations (B + C). The cover crop was either spring barley or spring wheat. On average for all trials and plots where the straw was removed, by the end of the sowing year, a tendency of 9% more tillers of meadow fescue, 29% more tillers of timothy, and 27% more plants of red clover was produced on plots with short than with long stubble. In the following year, the average seed yields were not significantly affected by stubble height in meadow fescue and timothy, but 11% higher on plots with short than with long stubble in red clover. This indicates that red clover is more vulnerable to the shade created by a long stubble than the two grass species. When the stubble was short, straw chopping produced equally high seed yields as straw removal in all species. For seed growers without their own husbandry or not receiving any payment for the cover crop straw, chopping of straw is, therefore, recommended as an environmentally sound and cost-saving alternative to straw removal. The straw must be chopped with sharp knives as finely as possible and spread evenly on the soil surface to facilitate rapid decomposition and rapid penetration by the undersown seed crop.
机译：由于牲畜减少，许多种子生产地区的谷物秸秆市场已经减少。因此，种子种植者希望切碎并归还秸秆。目的是调查秋茬作物茬高度和秸秆管理对营养生长的影响，以及次年的提摩太，草甸羊茅和红三叶草的种子产量。该计划包括两个秸秆高度（5-10厘米和20-30厘米），并结合四种不同的秸秆和秸秆处理方法，（A）去除秸秆，（B）结合时切碎秸秆，（C）结合后用拖拉机fl割和（D）两种操作（B + C）中的秸秆切碎。主要农作物为春季大麦或春季小麦。平均而言，到播种年底，所有除去稻草的试验和样地上，草地羊茅的分till增加了9％，蒂莫西的分till增加了29％，红三叶草的种植增加了27％。短残茬的地块。在第二年，草甸羊茅和苔藓的残茬高度并未对平均种子产量产生显着影响，但在红三叶草中，短残茬的地块比长残茬的地块高11％。这表明，与两个草种相比，红三叶草更容易受到长茬产生的阴影的影响。当茬短时，秸秆切碎产生的种子产量与所有物种中去除秸秆的产量一样高。因此，对于没有自己的畜牧业或不给盖作物秸秆支付任何报酬的种子种植者，建议将秸秆切碎作为除秸秆的无害环境且节省成本的替代方法。秸秆必须用锋利的刀尽可能细地切碎，并均匀地铺在土壤表面，以利于播种后的种子作物迅速分解和快速渗透。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号